Glossary-1
3160-A2-GB22-10
December 1996
Glossary
AIS
Alarm Indication Signal. A signal transmitted instead of the normal signal to
continue transmission continuity and to indicate to the receiving terminal that a
transmission fault exists at either the transmitting terminal or upstream of the
transmitting signal. Sometimes referred to as Blue Alarm.
AMI
Alternate Mark Inversion. A line encoding technique and a bipolar return-to-zero
signal.
Async Terminal
This feature allows a DSU/CSU to be controlled from an asynchronous (async)
terminal. When this feature is enabled, the async terminal menus and displays
emulate the DCP without being limited to the 2-line LCD display.
Auxiliary Backplane
An 8-slot backplane that fits over one half of the open section of the 3000 Series
Carrier. This is a passive assembly that provides interconnect capability between
3151 CSUs and 3161 DSU/CSUs and provides all interface connectors.
AWG
American Wire Gauge.
BES
Bursty Error Seconds. A second in which more than one, but less than 320 CRC6
error events, have occurred.
BPV
Bipolar Violation. A modified bipolar signaling method in which a control code is
inserted into the original data format.
B8ZS
Bipolar with 8 Zero Substitution.
CRC
Cyclic Redundancy Check. A method of error detection.
CSU
Channel Service Unit. Protects the T1 line from damage and regenerates the
T1 signal.
DCE
Data Communications Equipment.
DSU
Data Service Unit. Data communications equipment which transmits digital data
over a private line. Also used for limited distance communications over the PSTN
when a high-speed modem is not needed.
DS0
Digital Signal level 0. A signal of worldwide standard speed for PCM digital voice
channels running at 64 kbps.
DS1
Digital Signal level 1. A signal of 1.544 Mbps in North America.
DSX-1
Digital Signal Cross Connect level 1. An interconnection point for terminals,
multiplexers and transmission facilities.
DTE
Data Terminal Equipment.
DTMF
Dual Tone Multifrequency. The basis of operation for a pushbutton telephone.
D4
The transmission standard that specifies 12 frames as a superframe that is used for
frame synchronization and to locate signaling bits.
Содержание ACCULINK 316x
Страница 4: ...ACCULINK 316x DSU CSU C December 1996 3160 A2 GB22 10 Notices...
Страница 23: ...Introduction 1 9 3160 A2 GB22 10 December 1996 Figure 1 6 Auxiliary Backplane...
Страница 38: ...Installation 2 15 3160 A2 GB22 10 December 1996 Figure 2 13 3160 3164 DSU CSU Cabling Configurations...
Страница 77: ...Operation 3 35 3160 A2 GB22 10 December 1996 Figure 3 24 Example Channel Allocation...
Страница 135: ...A 1 3160 A2 GB22 10 December 1996 Front Panel Menu A...
Страница 136: ...ACCULINK 316x DSU CSU A 2 December 1996 3160 A2 GB22 10...
Страница 137: ...Front Panel Menu A 3 3160 A2 GB22 10 December 1996...
Страница 175: ...Pin Assignments D 11 3160 A2 GB22 10 December 1996 Figure D 7 EIA 530A to RS449 Adapter Cable Feature Number 3100 F1 580...
Страница 177: ...Pin Assignments D 13 3160 A2 GB22 10 December 1996 Figure D 8 EIA 530A to V 35 Adapter Cable Feature Number 3100 F1 570...